Code result
U0431
Invalid Data Received from Body Control Module
Moderate severity
What it means
Other modules receive implausible body status data (e.g. all doors reported closed while ajar). Comfort and lighting features can behave inconsistently.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
BCM software version mismatch
mediumA plausible cause — test and verify before replacing parts.
Gateway module routing CAN messages incorrectly
lowLess common, but worth ruling out after the more likely causes.
CAN terminating resistor (120 Ω) drifted out of spec
lowLess common, but worth ruling out after the more likely causes.
Related help
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